John Lawrence Mendoza
London
Summary
Motivated and results-driven professional with over two years of leadership, management, and customer service experience, supported by strong academic background in Computer Science with specialism in Cyber Security. Currently employed as Department Manager at Hennes & Mauritz (H&M), leading teams, overseeing departmental operations, and consistently delivering high standards of service, performance, and staff development.
Responsible for management of daily departmental operations, leadership and development of Team Leaders and Sales Advisors, and achievement of performance targets, customer satisfaction, and operational standards. Leads by example to foster positive, inclusive, and supportive working environment where staff communicate openly and perform effectively. Regularly manages high-pressure, high-volume trading periods while maintaining professionalism, composure, and exceptional service delivery.
Key responsibilities include workforce planning and rota management to maintain appropriate staffing levels, delivery of training and coaching to uphold company standards, and resolution of employee concerns and customer issues in fair and empathetic manner. Undertakes administrative and operational duties including banking, auditing, secure cash handling, stock management, and loss prevention. Demonstrates strong ability to balance people management with operational efficiency, contributing to sustained departmental performance and positive customer experience.
Progressed from Sales Advisor to Team Leader within nine months due to strong performance and leadership capability. Recognised for consistent excellence through Employee of Month (July 2024), Employee of Year (2024), and Team Leader of Year (2024) awards, alongside formal recognition from senior and area management.
First Class Honours graduate in BSc (Hons) Computer Science (Cyber Security) from University of Greenwich, with Triple Distinction in BTEC National Extended Diploma in Computing. Academic studies included Advanced Networking, Programming Paradigms, Information Security, Network Security, and Software Engineering, with frequent leadership of group projects involving task allocation, deadline management, and quality assurance.
Designed and developed web-based hospital discharge support system as Final Year Project, focused on improving communication, transparency, and patient engagement. System enables access to key discharge information, including diagnosis, estimated discharge date, consultant and GP details, alongside digital discharge checklist to confirm test completion, raise concerns, and acknowledge discharge plans. Project informed by extensive research into discharge workflows, multidisciplinary teams, and patient engagement processes, demonstrating application of technology to real-world organisational challenges.
Possesses practical experience in database design, querying, and maintenance using SQL and MS Access, alongside advanced proficiency in Microsoft Office, including Excel (formulas and pivot tables), Word (technical documentation), and PowerPoint (presentations).
Overview
3
3
years of professional experience
4
4
years of post-secondary education
1
1
Certification
Work history
Department Manager
Hennes & Mauritz
London
10.2025 - Current
- Drove departmental performance through regular training workshops, clear goal setting, and structured task organisation.
- Established and monitored key performance indicators to track progress, analyse sales trends, and identify growth opportunities.
- Planned and coordinated daily and weekly sales strategies in collaboration with senior management, aligned with company objectives.
- Implemented quality control measures and proactive scheduling to reduce operational delays and maintain high service standards.
- Planned and managed staff rotas effectively, adapting to changing workloads to ensure smooth and efficient operations.
- Delegated tasks based on individual strengths and balanced workloads to maximise productivity and maintain high staff morale.
- Trained and onboarded new recruits, ensuring seamless integration and consistent performance standards.
- Conducted regular feedback sessions and team meetings to improve communication, engagement, and staff development.
- Fostered positive and inclusive working environment that strengthened team cohesion and collaboration.
- Managed inventory levels to prevent stock shortages and supported loss prevention and stock control processes.
- Rotated merchandise and displays to highlight new products and promotions, supporting commercial performance.
- Handled customer complaints professionally and empathetically, maintaining satisfaction and brand standards.
- Coordinated inter-departmental collaboration to ensure operational alignment and successful project delivery.
- Allocated resources efficiently and adjusted priorities in response to business demands.
- Successfully managed team of up to 60 employees independently for two months, maintaining performance and service continuity.
Sales Advisor Team Leader
Hennes and Mauritz
London
08.2023 - 10.2025
- Delivered excellent customer service by promptly addressing and resolving customer queries.
- Increased sales through effective negotiation and persuasive communication techniques.
- Fostered strong relationships with suppliers to ensure timely stock delivery.
- Monitored and refreshed merchandise displays to attract customers and maximise sales.
- Set positive example for team while ensuring adherence to organisational standards and best practices.
- Organised training sessions for new and existing employees to maintain high performance and operational standards.
- Supervised team performance, fostering supportive environment and encouraging open communication.
- Demonstrated strong leadership during high-pressure, high-volume trading periods by remaining composed and customer-focused.
- Supported managers with weekly rota planning and coordinated daily staff deployment to optimise workflow.
- Performed administrative duties including banking, auditing, and secure cash handling.
- Recognised for outstanding performance with Employee of the Month (July 2024), Employee of the Year (2024), and Team Leader of the Year (2024) awards.
Sales Advisor
Hennes & Mauritz
London
11.2022 - 08.2023
- Suggested suitable products to customers for enhanced shopping experience.
- Fostered positive relationships with suppliers ensuring timely delivery of stocks.
- Worked extended hours during holiday season managing high customer footfall.
- Provided comprehensive after-sales support, ensuring customer satisfaction.
- Delivered high-quality customer service while maintaining strong customer satisfaction levels. Provided effective support to customers and team members to ensure positive store experience. Recognised for outstanding performance with Employee of the Month award (July 2023).
Education
A-Levels - Computing
London South East Colleges
London 09.2020 - 06.2022
Bachelor of Science - COMPUTER SCIENCE (CYBER SECURITY)
University of Greenwich
London, England 09.2022 - 06.2025
Skills
- Leadership & Team Management
- Staff Training, Coaching & Development
- Customer Service & Stakeholder Engagement
- Workforce Planning & Rota Management
- Operational & Performance Management
- Conflict Resolution & Problem Solving
- Database Management (SQL, MS Access)
- Organisational & Time-Management Skills
Certification
- First Aid
- Health and Safety Management
- Cyber Security (Advanced - Desktop)
Accomplishments
- Employee of the Month July 2023
- Employee of the Month July 2024
- Employee of the Year 2024
- Team Leader of the Year 2024
- Graduate with First Class Honours
References
References available upon request.
Timeline
Department Manager
Hennes & Mauritz
10.2025 - Current
Sales Advisor Team Leader
Hennes and Mauritz
08.2023 - 10.2025
Sales Advisor
Hennes & Mauritz
11.2022 - 08.2023
Bachelor of Science - COMPUTER SCIENCE (CYBER SECURITY)
University of Greenwich
09.2022 - 06.2025
A-Levels - Computing
London South East Colleges
09.2020 - 06.2022